My reveiw of Weistec tunning
Senior Member
Joined: Jan 2019
Posts: 335
Likes: 103
From: Saddlebrooke, AZ 85739
2013 CLS550 4Matic OE Tuned
I've put close to 200 miles on the car since the plug change. Mind you my plugs probably had 40k on them when I changed them. I've noticed definitely more pep and zero misfire at WOT. No check engine lights and better gas millage.
BTW: the NGK plugs that I purchased work just fine.....and no, they didn't put a hole through my cylinders........best just go pay $1K at the dealership and get a free cup of coffee...... and a
have the state of mind that you didn't really do anything except get 2% on your credit card points.
BTW: the NGK plugs that I purchased work just fine.....and no, they didn't put a hole through my cylinders........best just go pay $1K at the dealership and get a free cup of coffee...... and a
have the state of mind that you didn't really do anything except get 2% on your credit card points.
Last edited by Tbbt CLS; Feb 12, 2020 at 08:10 PM.
Senior Member
Joined: Oct 2019
Posts: 415
Likes: 165
From: Northern VA
2016 E63s
How’s the old saying go? If all you have is a set of channel locks everything looks like a spark plug?
Never seen a plug gapped that way. I guess it’s a half-step better than banging on the electrode with a hammer.
Never seen a plug gapped that way. I guess it’s a half-step better than banging on the electrode with a hammer.
Junior Member
Joined: Jun 2018
Posts: 40
Likes: 17
From: Accokeek, MD
2014 CLS550, 2016 Audi A7
Do the NGK plugs index the same as the OEM ones? Do you know? Be careful. There was a bulletin out there. Wrongly indexed plugs will put a hole in your cylinder. Not because of interference, it will be the flame front and heat that will do it. How did you torque your plugs down? Maybe I missed something but it seems you used the electric jig? Hope you didnt overtorque... or under. OEM plugs index properly under the right torque. Not sure about the NGK's.
When I got my tune from OE, I did a plug change, but I used new OEM plugs and a torque wrench. I also changed all the boots since they were cheap enough. Only thing original are the actual coil packs.
Hope with your tune and non OEM plugs, you dont melt the side of your pistons. Maybe you'll be fine. Who knows. Maybe Mercedes just put a bulletin out for no reason. Or maybe your NGK's indexed in the same place the OEMs needed to. Hopefully you double checked that.
When I got my tune from OE, I did a plug change, but I used new OEM plugs and a torque wrench. I also changed all the boots since they were cheap enough. Only thing original are the actual coil packs.
Hope with your tune and non OEM plugs, you dont melt the side of your pistons. Maybe you'll be fine. Who knows. Maybe Mercedes just put a bulletin out for no reason. Or maybe your NGK's indexed in the same place the OEMs needed to. Hopefully you double checked that.
Thread Starter
Junior Member
Joined: Jan 2020
Posts: 23
Likes: 4
From: Minneapolis, MN
2012 CLS 550 4-Matic
Tool looks nice but I'm not going to buy it. My 6.5 rating is based on someone having limited automotive experience and limited tools and knowledge. Basically I'm comparing Alex from "Legit street cars" to Sam Crac. For Alex it would be a 2-3.... for Sam it would be a 7.
BTW: these are youtubers that I watch and subscribe to
Thread Starter
Junior Member
Joined: Jan 2020
Posts: 23
Likes: 4
From: Minneapolis, MN
2012 CLS 550 4-Matic
Thread Starter
Junior Member
Joined: Jan 2020
Posts: 23
Likes: 4
From: Minneapolis, MN
2012 CLS 550 4-Matic
Do the NGK plugs index the same as the OEM ones? Do you know? Be careful. There was a bulletin out there. Wrongly indexed plugs will put a hole in your cylinder. Not because of interference, it will be the flame front and heat that will do it. How did you torque your plugs down? Maybe I missed something but it seems you used the electric jig? Hope you didnt overtorque... or under. OEM plugs index properly under the right torque. Not sure about the NGK's.
When I got my tune from OE, I did a plug change, but I used new OEM plugs and a torque wrench. I also changed all the boots since they were cheap enough. Only thing original are the actual coil packs.
Hope with your tune and non OEM plugs, you dont melt the side of your pistons. Maybe you'll be fine. Who knows. Maybe Mercedes just put a bulletin out for no reason. Or maybe your NGK's indexed in the same place the OEMs needed to. Hopefully you double checked that.
When I got my tune from OE, I did a plug change, but I used new OEM plugs and a torque wrench. I also changed all the boots since they were cheap enough. Only thing original are the actual coil packs.
Hope with your tune and non OEM plugs, you dont melt the side of your pistons. Maybe you'll be fine. Who knows. Maybe Mercedes just put a bulletin out for no reason. Or maybe your NGK's indexed in the same place the OEMs needed to. Hopefully you double checked that.
I might do a torque index test to see if there's a difference to make people feel better about this. I'll buy a nut......place it in a vice.......mark the plugs with a index line and torque to spec on each. Hell, I'll do it and post pics and results in this thread.
Sallies.....got to please the Sallies.
BTW: I'm over 900 miles since the plug change and zero problems.
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Junior Member
Joined: Jun 2018
Posts: 40
Likes: 17
From: Accokeek, MD
2014 CLS550, 2016 Audi A7
I might do a torque index test to see if there's a difference to make people feel better about this. I'll buy a nut......place it in a vice.......mark the plugs with a index line and torque to spec on each. Hell, I'll do it and post pics and results in this thread.
Sallies.....got to please the Sallies.
BTW: I'm over 900 miles since the plug change and zero problems.
Sallies.....got to please the Sallies.
BTW: I'm over 900 miles since the plug change and zero problems.
That's cute. I was trying to be helpful. But as others have noted, you're pretty much an ******* and unwanted here. I was saying that the plugs need to be indexed for a reason. The OEM plugs, when torqued to spec, they will automatically be indexed. The NGK's, not so sure. So you can torque to spec all day at 17ft lbs and they still not index properly. 900 miles isn't a lot of miles. Maybe you won't burn a hole in the piston. Maybe you will. MB put out a bulletin about the NGK plugs that had pics of a hole in the cylinder. I know some people do it anyway and have no issues. But it was enough of a problem for MB to address it though.
Do what you want with your car. I really could care less so no need to please the Sallies. Like stated above, was trying to be helpful to the forum. Take care.
Member
Joined: Sep 2017
Posts: 113
Likes: 29
cls550 2014
Tool looks nice but I'm not going to buy it. My 6.5 rating is based on someone having limited automotive experience and limited tools and knowledge. Basically I'm comparing Alex from "Legit street cars" to Sam Crac. For Alex it would be a 2-3.... for Sam it would be a 7.
BTW: these are youtubers that I watch and subscribe to
BTW: these are youtubers that I watch and subscribe to
So a timing chain change would be a 28 on scale of 1-10? I guess it like giving out participation trophies. You're the one that said it was a 6.5 and then listed all your "creds". I'm still trying to figure out why such a good mechanic as yourself had to go buy new tools to do a spark plug change.
